Genus Cephalobus
Bastian, 1865
Syn.: (Heterocephalobus) Brzeski, 1960
GEN. CHAR. Body tapering slightly at extremities. Head
somewhat
lobed. Caudal sucker none. Integument
having
well-marked transverse striae; no setae or papillae. Pharyngeal
cavity indistinct. Oesophagus narrowed previously to its
termination in a rounded swelling containing a simple valvular apparatus.
Intestine
sparingly covered with light-coloured fat-particles; intestinal tube proper
easily seen. Vulva at commencement of posterior third
of body. Uterus unsymmetrical. Spicules
slightly curved,
somewhat fusiform. Accessory piece posterior, median, easily
recognizable. Excretory ventral gland having a somewhat rigid,
curved duct, opening opposite posterior third of oesophagus. Lateral
vessels straight; terminations uncertain.
Movements sluggish.
(Description- Bastian, 1865)
Definition: Cephalobinae. With the characters of the subfamily.
Anterior part of oesophagus long, cylindrical, narrowing slightly at isthmus;
terminal bulb rounded and valvate. Lateral fields reaching past the
phasmids to the tail end. Female tail blunt or rounded; male tail
may be pointed.
DNA Sequences Obtained
Type species: Cephalobus persegnis Bastian, 1865
Other species:
C. brevicaudatus Zimmerman, 1898
C. buchneri Meyl, 1953
C. dubius Maupas, 1900
syn.: C. (Heterocephalobus)
kaczanowskii
Brezeski, 1960
C. nanus de Man, 1880
C. oryzae Karimova, 1957
C.
parvus Thorne, 1937
C. strandicornutus Allgen, 1934
C. thermophilus Meyl, 1953
(Description- Goodey, 1963)